D850GB P13 BIOS Can't select to boot from ADAPTEC 2410sa SATA RAID controller seen as SCSI

I've installed an Adaptec SATA 2410sa controller. It is a SATA RAID
(hardware) controller that presents itself as a SCSI controller to the
computer. The controller has BIOS enabled for booting.

From the computer BIOS I see no way to boot from this controller... it can
only boot from the IDE drive connected to the motherboard IDE controller.
The BIOS drop down list box has no SCSI choice showing.

After booting from the IDE drive with Windows XP I can see the new
controller and it's drive correctly and use it as an additional drive but I
can't set the BIOS to boot from it... I need to BOOT from the drive on that
new controller.

Intel won't support me because it's a Gateway computer, Gateway won't
support me because they don't sell the Adaptec 2410sa, Adaptec won't support
me because they say it's a BIOS issue with the motherboard maker... What a
stupid way to help your customers!!

Anyone with a solution? What can the problem be, really???

System information:
Board model Genuine Intel(R) D850GB system board
OS version Windows* XP version 5.1 Service Pack 1 build 2600
OS memory 523,564 KB RAM
Physical memory 512 MB RAM
Memory speed PC800
Memory type Other, RAMBUS
Form factor RIMM
BIOS date 08/20/2001
BIOS size 512 KB
BIOS version P13 (GB85010A.15A.0046.P13.0108201551) (latest available
from Gateway for this computer, XL-700)

Thanks!!